The Impact of Credit Risk on Profitability of the …
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ISSN: 2167-0234
Journal of
Business & Financial Affairs
Saeed and Zahid, J Bus Fin Aff 2016, 5:2
DOI: 10.4172/2167-0234.1000192
Research Article
Open Access
The Impact of Credit Risk on Profitability of the Commercial Banks
Saeed MS* and Zahid N
Glasgow Caledonian University, Glasgow Business School, Glasgow, UK
Abstract
This paper aimed to analyse the impact of credit risk on profitability of five big UK commercial banks. For measuring
profitability, two dependent variables ROA and ROE were considered whereas two variables for credit risks were: net
charge off (or impairments), and nonperforming loans. Multiple statistical analyses were conducted on bank data from
2007 to 2015 to cover the period of financial crisis. It was found that credit risk indicators had a positive association with
profitability of the banks. This means that even after the deep effects of credit crisis in 2008, the banks in the UK are
taking credit risks, and getting benefits from interest rates, fee, and commissions etc. The results also reveal that the
bank size, leverage, and growth were also positively interlinked with each other, and the banks achieved profitability
after the financial crisis and learned how to tackle the credit risk over the years.
Keywords: Credit risk; UK commercial banks; Bank profitability;
Net charge off; Nonperforming loans; ROA; ROE
Introduction
The banking industry worldwide has been more complex over the
years because of rapid development and growth of financial security
market [1]. Consequently, the banks started to practice multiple
compound operations without even perceiving the risks associated
with these transactions. As a result, the risk attitude and risk exposure
of banks became more composite and subject to system failure and thus
they caused to break down to economic system of the country where
they operate. The governments of various countries tried to control
the situations by practicing regulatory reforms in order to stabilise the
economy. However, it is worth to declare that these reforms did not
work well and ended up with the similar outcomes such as financial
volatility and economic downturn around the globe including UK,
USA and other economies on which worlds¡¯ institutions are based
to great extent. During all the circumstances the most exposed risk,
which was difficult to discover, was the credit risk [2]. The significance
of credit risk is enlarged by the reality that it is associated with the
collateral problem. Hence, it becomes the most controversial topic to
be discussed and explored. For dealing with credit risk, Basel II also
practiced and adopted different credit risk management techniques
[3]. The primary objective of these practices was to improve the quality
of credit risk management without limiting the competitiveness of the
banks worldwide.
Over the last 10 years, the quality of the loan and its portfolios
across many economies worldwide stayed comparatively stable until
the emergence of 2007-08 financial crises. Since then the quality of the
bank assets declined quickly because of the world economic downturn.
The reality is that the loan performance is closely associated with the
economy of any country and decline in the loan performance was not yet
standardised across the world economies [4]. For instance, some crosscountry analyses and evaluations in terms of GDP performance during
the time of crises reveal extensive enlargements in non-performance
loans. In 2009, the economy of Latvia squeezed by 18 percent decline in
GDP. Simultaneously, the economy of Germany also shrank by nearly
5% in terms of GDP and when it appears to non-performing loan ratio,
it also contracted by great extent [5].
Banks face too many serious problems due to unsuccessful credit
risk management but the credit lending remains the chief activity of
the banking sector throughout the world. The core cause behind it that
banks can no longer survive without this activity. This is the reason
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ISSN: 2167-0234 BSFA an open access journal
that credit worth is considered as a key sign of financial health and
soundness of financial institutions particularly the banks. The interests
charged by the banks on advances and loans shape large part of the
bank¡¯s assets and delays and defaults of credits and advances create
solemn circumstances for both the lenders and borrowers and even
the whole economy can be disturbed as evident in the 2008 financial
crisis. Different studies in the context of banking crises across the
world uncover the fact that poor credits (asset quality) are the primary
cause of failure of the banks [6]. Stuart indicates that the ratio of nonperforming loans (bad loans) all around the world was extremely high
between 1999 and 2009 in commercial banking sector [7]. And this
was due to a number of reasons such as absence or inadequate loan
collaterals, poor loan processing, ineffective credit risks management,
excessive intervention during loan lending procedure, and several
negative impacts on bank profitability.
Therefore, by considering the importance of credits in the banking
sector and their severe economic impact, it is extremely important
to find the relation and impact of credit with/on profitability of the
bank. The banking theory points out 6 major risks associated with the
credit policy of banks. These risks are: credit risk (or repayment risk),
credit deficiency risk, operating risk, portfolio risk, interest risk, and
trade union risk [8]. However, credit risk is the most vital risk among
them and thus, it requires special awareness and concentration. Hence,
a sincere attempt is made in this dissertation to make the modest
contribution to the credit risk literature by analysing the impact on UK
banking sector with particular focus on five big UK commercial banks
including HSBC, Barclays, Royal Bank of Scotland, Lloyds Banking
Group, and Standards Chartered Bank.
Literature Review
Figure 1 illustrates the proposed theoretical model of this study.
The model consists of two profitability indicators (ROA and ROE)
*Corresponding author: Muhammad Sajid Saeed, Glasgow Caledonian
University, Glasgow Business School, Glasgow, Cowcaddens Rd, Lanarkshire G4
0BA, Scotland, UK, Tel: +441413313000; E-mail: msaeed14@caledonian.ac.uk
Received June 17, 2016; Accepted June 27, 2016; Published June 30, 2016
Citation: Saeed MS, Zahid N (2016) The Impact of Credit Risk on Profitability
of the Commercial Banks. J Bus Fin Aff 5: 192. doi:10.4172/2167-0234.1000192
Copyright: ? 2016 Saeed MS, et al. This is an open-access article distributed
under the terms of the Creative Commons Attribution License, which permits
unrestricted use, distribution, and reproduction in any medium, provided the
original author and source are credited.
Volume 5 ? Issue 2 ? 1000192
Citation: Saeed MS, Zahid N (2016) The Impact of Credit Risk on Profitability of the Commercial Banks. J Bus Fin Aff 5: 192. doi:10.4172/21670234.1000192
Page 2 of 7
Bank size
Profitability indicators
Growth
Net charge off
over total loans
ROA & ROE
Nonperforming
loans over total
loans
Leverage
Figure 1: Theoretical model.
which are considered as dependent variables; and five independent
variables (bank size, growth, leverage, and credit risks (ratio of net
charge off and non-performing loans to total loan) (Figure 1).
There are several risks linked with the banking sector namely credit
risk, earning risk, interest rate risk, market risk and liquidity risks
are key risks. There are three dominant categories of these risks like,
credit risk, operations risk and market risks. Among all types of risks
the vigorous part is played by the credit risk without any suspicion
that bank¡¯s biggest asset is loan which is normally consists of 50 to
70 per cent of banks value. Credit risk is well-defined by the Basel
committee on Banking supervision as ¡°potential that a bank borrower
or counterparty will fail to meet its obligations in accordance with
agreed terms¡± [9].
The credit risk based upon the obtainable internal data which is
measured by investigating the adjustments in quality loans (medium
or low) over total asset ratio. The credit risk can be controlled and
dropped down by the chance provided by this ratio. However several
scholars have stated the conventional ratios which can be employed
to recognise the credit risk if no data about medium loan quality is
available, for example;
o
Total loans to total deposits
o
Total loans to total assets
o
Nonperforming loans to the total loans
o
Nonperforming assets to total loans and advances
o
Loan loss reserves to the total loans
o
Net charge-offs of loans to total loans and advances [5,10-12].
Literature on non-performing loans has extended along with the
attention towards investigating the major reasons behind the financial
vulnerability over the last few years. Financial weakness is primarily
because of critical role impaired assets have, proven by the evidence
which shows the firm link between banking/financial crises and NPLs
in Sub-Saharan African countries and East Asian countries during
the 1990s. The prevailing literature to scrutinise the determinants of
non-performing loans in Guyana is studied in the current section to
formulate a theoretical framework.
Keeton and Morris made an examination on the causes of loan
losses in their earliest study [13]. Latterly they estimated the 2470 losses
insured by commercial banks in the US during the time period of 1975
to 1985. NPLs are used by them as the prime method of calculating loan
gains and losses. The findings of their study indicate the variation in loan
losses documented by banks is mainly described by the local economic
situations and inadequate performance of particular industries.
The publication of Keeton and Morris is followed by several other
studies which anticipated interrelated reasons for problems regarding
credits in the United States. Another study was conducted by Sinkey
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and Greenwalt on the loan gain/loss experience of major banks in the
United States [14]. The results of their study postulate that Loan ¨C loss
rate is affected by both internal and external factors of these banks.
The term loan loss rate refers to an addition of NPLs and net loan
charge offs and dividing this sum by net charge offs plus total loans.
The main findings of their study showing that internal factors namely
High rate of interest, Excessive lending and volatile funds significantly
and positively influence the loan-loss rate. Sinkey and Greenwalt
also discovered that loss rate of banks is also based on the economic
conditions. They used the data of giant banks in the US during the
Time period of 1984 to 1987 by employing simple log-linear regression.
Another study on the effect of loan expansion in the United States
is conducted by Keeton [13]. The author took the data from 1982
to 1996 by employing the regression model for empirical analysis.
Evidence show that credit growth is strongly associated by impaired
assets stated by the author. The major credit loss in particular US States
is affected by the rapid credit growth that has a relationship with lower
credit standards.
Many studies also provided similar results conducted other than
US financial system. Kodan and Chhikara examined the Indian
banking industry through statistical tools and techniques by analysing
the trends and composition of NPAs [15]. The analysis of data showed
the significant reduction in NPAs in Indian industry over the time.
Salas and Saurina conducted a study on the Spanish commercial
and savings banks by using a comprehensive dataset and framework
for 1985 to 1997 [16]. The key aim of this research was to explore
the determinants of problem credits in Spanish banks. Their findings
indicate that major variation in NPLs is mainly explained by market
power, capital ratio, bank size, rapid credit expansion, and true
GDP growth. Similarly in another study Spanish banking sector was
investigated for the period of 1984 to 2003. The empirical evidence
shows that loan terms, higher interest rates, and GDP growth are
key determinants of NPLs. This study points out that managers in
commercial banks provide more loans when economic conditions
are excellent and trigger several issues such as agency problems, herd
behaviour and disaster myopia.
Rajan and Dhal conducted a study on the commercial banks of
India by utilising panel regression analysis [17]. They reported that
encouraging economic situations and other financial indicators such as
credit direction, bank size, credit terms, and maturity have significant
influence on the NPLs of Indian commercial banks.
Fofack made an attempt to examine the determinants of NPLs
in several countries of Sub-Saharan Africa by using a pseudo panelbased model [18]. The researcher found that NPLs are determined by
many factors such as interest margins, interest rate, economic growth,
interbank loans, and exchange rates etc. The NPLs and these economic
factors have important role to play in the undiversified African
countries.
The study of Hu et al. indicates the association between commercial
bank¡¯s ownership structure and NPLs in Taiwan for the period of
1996 to 1999 using panel dataset [19]. The results indicate that Nonperforming loans are negatively associated with higher government
ownership and bank size while diversification seems indifferent and
may not be a determinant.
Ratio analysis is used to measure and analyse the bank¡¯s profitability.
Financial statements of banks demonstrate some ratios and some can
be calculated based on requirements if needed. Koch and MacDonald
Volume 5 ? Issue 2 ? 1000192
Citation: Saeed MS, Zahid N (2016) The Impact of Credit Risk on Profitability of the Commercial Banks. J Bus Fin Aff 5: 192. doi:10.4172/21670234.1000192
Page 3 of 7
stated that relatively appropriate measures for measuring the bank¡¯s
profitability level are Return on Assets (ROA) and Return on Equity
(ROE) [20]. These measures are described in the light of the existing
literature in this section.
ROA is calculated as a percentage of net income and total assets.
ROA is used as main profitability measure in most of the organisations
including banks and financial institutions. The ROA demonstrates the
level of net income produced by the bank and also determines how
the assets utilised by banks to generate profit over the years [6]. The
competence and proficiency of banks in transforming their assets into
profits is also indicated by it. Hence, to improve the performance of
banks, they always attempt to achieve higher ROA. The ranking of
banks is usually based upon the higher ROA ratio and total assets. As
a general view, particularly in banking sector, ROA is known as good
profitability multiplier for the reason that equity multiplier does not
influence it [21].
A percentage of net income over shareholder¡¯s equity is termed as
ROE. The net income comprised of all types of earnings like preferred
stock income, surpluses, undivided profits and capital reserves. The
difference between net assets and liabilities is termed as shareholder¡¯s
equity on the other hand. The most common measure to determine the
effectiveness of banks of generating revenue based on every element of
shareholder¡¯s equity.
To attain sufficient level of profitability, Both ROE and ROA refer
to bank¡¯s managerial ability. According to Golin and Delhaise, the
ROE between 15 to 20 per cent is considered to be good for a banking
institution [6].
The significant difference between ROA and ROE measures is
debt. The total assets and shareholder¡¯s equity will become equal in the
absence of debt; consequently the results drawn from each measure
would be equivalent. According to the Koch and MacDonald, a greater
value of ROE is not always considered as inspirational indicator of
good performance of the bank, consequently ROA is known as suitable
measure of profitability and efficiency of the banks [20].
An extensive stock of earlier literature has discussed the ROE as a
significant indicator to quantify the profitability of the banks. Foong
revealed that ROE is used to measure the efficiency of banks which
explains to make upcoming profits; the reinvested income is used to
what extent [22].
According to Riks bank¡¯s Financial Report to define the profitability
in the banks, the technique which is normally used is to associate profit
with shareholder¡¯s equity [23]. Moreover, in the paper ¡°Why Return on
Equity is a Useful Criterion for Equity Selection¡±, the author has found
a very useful instrument for profit generating efficiency provided by
ROE for its ability to measure the extent of company¡¯s earnings on the
equity capital.
Company¡¯s after tax annual net income divided by shareholder¡¯s
equity is termed as ROE. NI is the deduction of all expenditures and
taxes from total earnings. Retained earnings added to capital invested
in the company are called equity. Basically, the amount of earnings
made from equity is termed as ROE. The higher value of ROE indicates
that, without injecting new capital into the company profit is rising.
Each year shareholders are provided with more of their investment
referred by a progressively growing ROE. Conclusively, the greater
ROE is fruitful for them as well as for the growth of the company.
Additionally, ROE guides the investors how efficiently the capital is
reinvested by taking the retained earnings.
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According to the study of Waymond, the indicators widely used
with greater esteem for credit analysis in banks is profitability ratios, as
results of management performance is associated with the profitability
[24]. Most widely used ratios are ROE and ROA, and the ROE level of
quality ranges from 15-30 percent and at least 1 per cent for ROA.
Joetta suggested that the aim of ROE as the investigation of total
profit produced by the firm¡¯s equity. It is also mentioned that to
engender profit from equity the ROE is used as a gauge of the efficiency
[25]. This ability is associated with how accurately the collaterals are
utilised to yield the earnings. The assets¡¯ quantity produced by the
company against each equity dollar, considerably determined through
the effectiveness of assets utilisation. Thus, after bringing the evidence
of ROE used as the profitability indicator, the discussion can be moved
towards credit risk management indicators.
Research Methodology
Research design
The research design embraces the methods on which the research
work is founded on Saunders et al. [26]. In other words, it can be said
that it is composed of the type of the study which is employed by the
researchers to accomplish the objectives. The type of study covers
various aspects such as hypotheses, variables, methods, and analyse
framework. Descriptive and exploratory research designs are the two
fundamental categories of research design. The use and adoption of
both research designs is primarily based on the nature and requirements
of the study [27].
The descriptive research design is inappropriate for this research
because of scientific necessity such as laboratory experiment. The
exploratory research design can better fit in this research because of
highlighting the links (significant or insignificant) between credit risk
and bank profitability. It is supposed that finding these links will help
the UK banks to avoid credit risks in the future. In addition, the study¡¯s
nature is elastic and distinct in answering the research questions.
Therefore, the research objectives can be accomplished more explicitly
while adopting exploratory research design [28]. Moreover, the results
of this study are largely rooted in the quantitative data and thus
careful and thorough investigation is needed which can be achieved by
adopting exploratory research.
Population
The key aim of this research is to determine the links between bank
profitability and credit risks associated with banks. The numerical data
for analyses is acquired from five big UK banks for the period of eight
years starting from 2007 to 2015. The big five UK banks refer top five
UK commercial banks which include:
1. HSBC
2. Barclays
3. Royal Bank of Scotland (RBS)
4. Lloyds Banking Group (consists of Lloyds TSB, Halifax, and
Bank of Scotland)
5. Standard Chartered Bank (SCB)
The updated list of top UK banks is acquired from the MarketCensus.
com. The data required for selected variables is acquired from Bank
Scope database which extracts information from the financial
statements of the banks. The financial statements of some banks were
Volume 5 ? Issue 2 ? 1000192
Citation: Saeed MS, Zahid N (2016) The Impact of Credit Risk on Profitability of the Commercial Banks. J Bus Fin Aff 5: 192. doi:10.4172/21670234.1000192
Page 4 of 7
also considered to find double check the information/data extracted.
Data collection
The empirical data about study variables for the period of eight
years (2007 to 2015) is collected from Bank Scope database which
contains the data of all commercial UK banks. This period is important
because it covers the financial crises of 2008 as well. Two types of
empirical data (dependent variables and independent variables) are
collected based on the theoretical model of the study (Figure 1). The
dependents variables are ROE (Return on Equity) and ROE (Return on
Assets) and conversely the independent variables are the factors that
affect bank profitability including the credit risk. So the independent
variables include credit risk variables, bank size, growth, and leverage
as shown in Table 1.
Model
This study investigates the impact of credit risk on profitability of
big five UK commercial banks. For this purpose, it is essentially required
to find the relationship between credit risk and profitability indicators
and that is why the regression model is used to declare dependent and
independent factors. A general linear model of regression is outlined in
equation 1 where ¡®Y¡¯ indicates the dependent variables and ¡®X¡¯ are the
independent factors. ¡®C¡¯ shows the coefficient.
Y=c+f(X)
(1)
By putting the study variables in above equation, two equations 2
and 3 can be formed where ROEi,t and ROAi,t represent the profitability
factors (i=1,¡N, and t=1,¡,T) which depend upon the independent
factors such as credit risk factors including CRIMP (Credit risk
calculated as impairments divided by total loans), CRNPL (Credit risk
calculated as non-performing loans divided by total assets), BS (bank
size), GR (growth in bank interest income), and LV (leverage ratio).
ROAi,t=c0+¦ÁCRIMP i,t+¦ÂCRNPL i,t+¦ÖBS i,t+¦ÄGR i,t+¦ÃLVi,t+ i,t
(2)
ROEi,t=c0+¦ÁCRIMP i,t+¦ÂCRNPL i,t+¦ÖBS i,t+GR i,t+¦ÃLVi,t+ ¦Åi,t
(3)
Apart from the regression analysis, the descriptive and correlation
analyses are also performed. The descriptive analyses indicate the
calculation of fundamental statistical formulas such as central
tendencies like mean, median, mode; and deviations like standard
deviation. The central tendencies show the averages of the particular
variables while standard deviation indicates the variability of data or
the standard error.
The links or associations between credit risk variables and
profitability indicators can be found through correlation analysis. The
correlation analysis in this study is used to find the association of each
profitability indicator (i.e. ROA and ROE) with all credit risk variables.
The formula of correlation is as follows which is given by Karl Pearson.
Independent
variables
Dependent
variables
r=
¡Æ ( x ? x)( y ? y)
¡Æ ( x ? x) ? ¡Æ ( y ? y )
2
2
(4)
The Karl Pearson¡¯s formula of coefficient of correlation (r) is
popular for finding correlations and according to its assumption the
results should remain within the range of -1 to +1. The results near to
+1 show stronger correlation or links between variables, and results
close to -1 point out weaker relationships. Moreover, if the result of ¡®r¡¯
is perfectly zero then it shows that both variables have no relationships
at all (Peck et al. 2011).
Results and Discussion
Regression results
The regression model considered two profitability measures ROA
and ROE which depend upon 5 independent credit risk indicators
including: CRIMP ¨C Credit Risk due to net off-charge or impairments,
CRNPL ¨C Credit risk due to non-performing loans, BS ¨C bank size, GR
¨C growth and LV ¨C leverage. Table 2 indicates independent variables as
credit risk indicators which are entered into both regression equations
(i) and (ii) (Table 2).
ROAi,t=c0+¦ÁCRIMP i,t+¦ÂCRNPL i,t+¦ÖBS i,t+¦ÄGR i,t+LVi,t+ ¦Åi,t
(i)
ROEi,t=c0+¦ÁCRIMP i,t+¦ÂCRNPL i,t+¦ÖBS i,t+GR i,t+¦ÃLVi,t+ ¦Åi,t
(ii)
Two regression models are indicated in Table 3 showing the
variability percentage of independent variables. The ¡°R square¡±
demonstrates the relationship between dependent and independent
variables whereas ¡°R¡± represents the square root of R. The value of R
points out how independent variables are associated to ROA and ROE.
Moreover, the ¡°adjusted R square¡± mentions the statistical shrinkage of
credit risk variables. Simply, adjusted R square refers the compatibility
of independent variables with dependent ones in order to validate the
decisions based on regression model [29].
In model 1, the value of R square is 0.281 which demonstrates a
suitable level of association between all the variables. The shrinkage
level for model 1 is 0.089 (8.9%) which is calculated by taking difference
of R square and adjusted R square values. In fact, there is no hard and
fast rule for assessing the shrinkage level; however, it is acceptable if lies
between 10 and 15% [30]. The shrinkage level of model 1 is between
this specific range and therefore accepted because it represents the
significance of variables involved as predictors (Table 3).
The value of R square in model 2 is 0.154 and the shrinkage level is
0.106 (10.6%) which is relatively higher then model 1 but lies between
10 and 15% and thus accepted. Both models are similar in terms of R,
R square and adjusted R square but standard error of the estimate of
model 2 demonstrates high value as compared to model 1. This shows
the significance of the effect of random changes [31].
The ANOVA analysis in Table 4 shows the statistical significance
of predictors (or independent factors) and their unpredictability over
ROA and ROE. This significance is showed in Table 4 using ¡®F¡¯ and
¡°Sig.¡± values. The ¡°Sig.¡± value is also known as P-Value. In model 1, the
p-value 0.007 is below 0.01 and 0.05 standards which shows that the
Measure
Formula
ROA
=Net income/Total assets
Impact
Source
Bank scope
ROE
=Net income/Shareholder equity
Bank scope
Credit risk
=Net Charge Off (impairments)/Total loans and advances (to customers and banks)
+/-
Bank scope
Credit risk
=Non-performing loans/Total loans and advances (to customers and banks)
+/-
Bank scope
Bank size
=Total assets
+
Bank scope
Growth
=Growth in net interest income of bank
+
Bank scope
Leverage
=Total debt/Total assets
+
Bank scope
Table 1: Study variables.
J Bus Fin Aff
ISSN: 2167-0234 BSFA an open access journal
Volume 5 ? Issue 2 ? 1000192
Citation: Saeed MS, Zahid N (2016) The Impact of Credit Risk on Profitability of the Commercial Banks. J Bus Fin Aff 5: 192. doi:10.4172/21670234.1000192
Page 5 of 7
Model
Variables Entered
(i) and (ii)
CRIMP, CRNPL, BS, GR, LVa
Variables Removed
Method
Enter
Table 2: Variables entered/removed.
Model
R
R Square
Adjusted R Square
Std. Error of the
Estimate
1
0.530a
0.281
0.192
4.01
2
0.391a
0.154
0.048
16.801
Correlation analysis
a. Predictors: (Constant), CRIMP, CRNPL, BS, GR, LV.
Table 3: Summary of the models.
Model
1
2
Sum of Squares
Mean Square
Regression
388.62
50.822
Residual
1014.054
16.578
Total
1398.674
Regression
3115.714
392.937
Residual
17880.561
281.423
Total
20984.734
F
Sig.
3.202
0.007a
1.419
0.222a
Predictors: (Constant), CRIMP, CRNPL, BS, GR, LV.
Dependent Variable: ROA.
c
Dependent Variable: ROE.
a
b
Table 4: ANOVAb,c.
Variables
Constant
ROA
ROE
Coefficients
t-value
Sig.
Coefficients
t-value
Sig.
76.514
1.690
0.095
109.811
0.572
0.573
CRIMP
0.069
1.27
0.894
0.715
1.202
0.247
CRNPL
0.210
0.370
0.722
0.713
-1.170
0.248
BS
0.059
0.521
0.610
0.138
1.050
0.300
GR
0.178
1.362
0.175
0.289
2.110
0.039
LV
0.340
1.491
0.134
0.134
0.570
0.633
Table 5: Coefficients.
relationship between predictor variables and dependent factors. The
F-value 3.202 in Table 4 denotes an appropriate link between dependent
and independent factors in model 1. However, model 2 demonstrates
0.222 p-value which is higher than 0.01 and 0.05 standards. This means
that the association between dependent and independent variables
is non-linear. In contrast, the F-value 1.419 indicates apt level of
association between variables (Table 4).
Table 5 provides detail of beta coefficients of model 1 and model
2 of regression. Based on Table 5 coefficients, the following regression
models of ROA and ROE are formed.
ROA=76.514+0.069 (CRIMP)+0.210 (CRNPL)+0.059 (BS)+0.178
(GR)+0.340 (LV) (Model 1)
ROE=109.811+0.715 (CRIMP)+0.713 (CRNPL)+0.138 (BS)+0.289
(GR)+0.134 (LV) (Model 2)
In both models, all credit risk variables have positive impact
on ROA and ROE. These results are similar to various researchers
including Sinkey and Greenwalt, Ahmed et al, Berr¨ªos and Ueda and
Mauro (Table 5) [14,32-34].
Validity of regression results
Multicollinearity statistics is the reliable measure to calculate the
validity of regression analysis and this is usually done through SPSS.
Using multicollinearity statistics, the Variance Inflation Factor (VIF)
and tolerance level are calculated (Table 6). The outcomes in Table 6
can be evaluated on the particular criteria. For instance, it is suggested
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by Gujarati that the VIF value should be under 5 and the 1/VIF (or
multicollinearity) value should be nearer to zero [35]. If these conditions
are met then the regression analysis is considered to be validated. As
shown in Table 6 that VIFs of variables is under 5 and 1/VIF values
are also nearer to zero. This shows the absence of multicollinearity in
regression analysis (Table 6).
The correlation analysis is done to correlate ROE and ROA
profitability indicators with credit risk factors that are considered
independent in this research. Therefore, this section is divided into two
subsections:
? Correlating ROA with credit risk factors
? Correlating ROE with credit risk factors
The correlation matrix in Table 7 carries the correlation between
ROA and credit risk variables having influence on bank profitability.
Table 7 shows that all factors including Net off-charge impairments,
non-performing loans, bank size, growth and leverage are positively
correlated with ROA. However, bank size and leverage have weak
association as compared to other factors. It is evident in Table 7 that
all other factors are also positively correlated with each other apart
from leverage and net-off charge impairments. These two have slightly
negative relationship which is not a big issue. These correlation results
are similar to various studies conducted in the past where Sinkey and
Greenwalt and Berr¨ªos are prominent (Table 7) [14,33].
Like ROA, ROE is another measure to quantify profitability. The
correlation matrix in Table 8 demonstrates the correlation between
ROE and credit risk variables. It is shown in the Table 8 that all
credit risk factors (apart from Net off-charge impairments ¨C CRIMP)
are positively correlated with ROE. However, they have no strong
Variables
Variance Inflation Factor
(VIF)
1/VIF
CRIMP
4.848
0.206271
CRNPL
3.752
0.266525
BS
1.822
0.248847
GR
1.349
0.34129
LV
4.640
0.215517
Table 6: Multicollinearity Statistics.
ROA
ROA
CRIMP
CRNPL
BS
GR
LV
1
CRIMP
0.223
1
CRNPL
0.211
0.98
1
BS
0.015
0.036
0.054
1
GR
0.429
0.095
0.116
0.171
1
LV
0.082
-0.028
-0.044
0.77
0.558
1
Banks=5, Variables=6
Table 7: ROA relationships.
ROA
ROA
CRIMP
CRNPL
BS
GR
LV
1
CRIMP
-0.006
1
CRNPL
0.041
0.704
1
BS
0.155
0.043
0.126
1
GR
0.176
0.048
0.137
0.271
1
LV
0.087
-0.085
-0.019
0.782
0.45
1
Banks=5, Variables=6
Table 8: ROE relationships.
Volume 5 ? Issue 2 ? 1000192
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